CN206524755U - Driver for isolating based on impulse generator - Google Patents
Driver for isolating based on impulse generator Download PDFInfo
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- CN206524755U CN206524755U CN201620962552.5U CN201620962552U CN206524755U CN 206524755 U CN206524755 U CN 206524755U CN 201620962552 U CN201620962552 U CN 201620962552U CN 206524755 U CN206524755 U CN 206524755U
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- driver
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Abstract
A kind of driver for isolating based on impulse generator, for the power switch pipe in driving switch power-supply system, including primary circuit and secondary side rectification circuit, the primary circuit includes PWM controller, the N type switch tube Q1 controlled by PWM controller, the primary side winding of transformer and electric capacity, the secondary side rectification circuit includes the vice-side winding and diode D2 of transformer, the Same Name of Ends of the vice-side winding of the transformer draws the first output end as driver for isolating through diode D2, is connected for the grid with power switch pipe；The second output end as driver for isolating is drawn at the different name end of the vice-side winding of the transformer, is connected for the source electrode with power switch pipe.On the one hand the driver for isolating can reduce the loss of transformer in circuit, reduce the volume of whole circuit, reduce cost, on the other hand can reduce the mismatch between crisscross parallel circuit of reversed excitation, improve efficiency, reduce EMC interference.
Description
Technical field
The present invention relates to IC design technical field, and in particular to the driver for isolating based on impulse generator.
Background technology
In the circuit occasion that interleaving inverse excitation parallel circuit is applied, such as solar photovoltaic grid-connection crisscross parallel flyback is miniature
Inverter, two flyback transformers are to restrict the key factor that Miniature inverter is further minimized.If making two transformers
Integrate, it is possible to reduce the overall volume of transformer, improve the efficiency and power density of converter.
Existing conventional isolated drive circuit, is with the difference of the power circuit of normal shock topology, and normal shock topology circuit is used
In the transmission of power.And isolated drive circuit only realizes the drive control of power switch pipe in topology (such as metal-oxide-semiconductor, IGBT),
It is mainly used in output control signal to power switch pipe.
The content of the invention
For above-mentioned prior art, present invention aims at the driver for isolating based on impulse generator is provided, solve existing
There is technology insulation conversion efficiency low and the technical problem such as power consumption is big.
To reach above-mentioned purpose, the technical solution adopted by the present invention is as follows：
Driver for isolating based on impulse generator, for the power switch pipe in driving switch power-supply system, its feature
It is：Including primary circuit and secondary side rectification circuit, the N that the primary circuit includes PWM controller, controlled by PWM controller
Type switching tube Q1, the primary side winding of transformer and electric capacity, the secondary side rectification circuit include vice-side winding and two poles of transformer
Pipe D2, the Same Name of Ends of the vice-side winding of the transformer is used through the first output end of the diode D2 extractions as driver for isolating
It is connected in the grid with power switch pipe；Draw and be used as the second of driver for isolating in the different name end of the vice-side winding of the transformer
Output end, is connected for the source electrode with power switch pipe；
Magnetic core on the transformer, transformer, secondary skeleton, vice-side winding, secondary pin, primary side skeleton, primary side winding,
Magnetic core under primary side pin and transformer；
The primary side winding is two lines with around corresponding to main road respectively and from road；
The vice-side winding is two lines with around corresponding to main road respectively and from road；
The primary side pin is at least three, and one is main road and is shared from road that another two is main road and made respectively from road
With shared primary side pin is used to detect potential point；
Main road and coiling from road and the connected mode of pin are opposite, make the two electric current around to opposite；
The driver for isolating, in the exciting circuit and degausser of the primary side winding of transformer, electric capacity is only operated in
In degausser, it is not involved in excitatory.
In such scheme, the primary circuit, in addition to resistance R3 and diode D1, wherein, the Same Name of Ends of transformer draws
Go out the input as driver for isolating, for being connected with voltage source；The different name end of transformer is grounded by N type switch tube Q1；
The Same Name of Ends of one end of electric capacity and transformer is connected, and the other end of electric capacity and the negative electrode of diode are connected, the anode of diode with
The different name end connection of transformer；Resistor coupled in parallel is at the two ends of electric capacity；Wherein,
The exciting circuit of the primary side winding of transformer, is only made up of N type switch tube Q1 conduction path and primary side winding；
The degausser of the primary side winding of transformer, when N type switch tube Q1 is turned off, by electric capacity, resistance, diode and original
Side winding is constituted.
In such scheme, the primary circuit, in addition to resistance R3 and diode D1, wherein, the Same Name of Ends of transformer draws
Go out the input as driver for isolating, for being connected with voltage source；The different name end of transformer is grounded by N type switch tube Q1；
The anode of diode and the different name end of transformer are connected, and the negative electrode of diode and one end of electric capacity are connected, another termination of electric capacity
Ground；Resistor coupled in parallel is at the two ends of electric capacity；Wherein,
The exciting circuit of the primary side winding of transformer, is only made up of N type switch tube Q1 conduction path and primary side winding；
The degausser of the primary side winding of transformer, when N type switch tube Q1 is turned off, by primary side winding and diode, electricity
Hold, resistance is constituted.
In such scheme, the secondary side rectification circuit, in addition to accelerate breaking circuit, the acceleration breaking circuit is by resistance
R5, resistance R6, resistance R7, p-type switching tube Q2 compositions, wherein, resistance R5 one end is connected to diode D2 anode, resistance R5
The other end be connected to p-type switching tube Q2 grids；Resistance R6 one end is connected to diode D2 negative electrode, and the other end is connected to P
Type switching tube Q2 source electrodes, resistance R7 one end connection p-type switching tube Q2 drain electrodes, the other end is connected to transformer T1 vice-side windings
Ns1 different names end.
In such scheme, the PWM controller model RT9214, it also receives control signal, and control signal is by computer
PWRGD signal ends on mainboard are sent.
Compared with prior art, beneficial effects of the present invention：
On the one hand the loss of transformer in circuit can be reduced, reduces the volume of whole circuit, reduces cost, another aspect energy
The mismatch between crisscross parallel circuit of reversed excitation is reduced, efficiency is improved, EMC interference is reduced.
Brief description of the drawings
Fig. 1 is circuit theory schematic diagram of the invention.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
The present invention will be further described below in conjunction with the accompanying drawings：
Embodiment 1
The secondary side rectification circuit, in addition to accelerate breaking circuit, the acceleration breaking circuit by resistance R5, resistance R6,
Resistance R7, p-type switching tube Q2 are constituted, wherein, resistance R5 one end is connected to diode D2 anode, and the resistance R5 other end connects
It is connected to p-type switching tube Q2 grids；Resistance R6 one end is connected to diode D2 negative electrode, and the other end is connected to p-type switching tube Q2
Source electrode, resistance R7 one end connection p-type switching tube Q2 drain electrodes, the other end is connected to transformer T1 vice-side winding Ns1 different names end.
Magnetic core on transformer, secondary skeleton, vice-side winding, secondary pin, primary side skeleton, primary side winding, primary side pin and
Magnetic core under transformer.
Wherein, magnetic core has two annulus under magnetic core and transformer on transformer, is outer shroud and inner ring, outer shroud and inner ring center
Centered on post.Two grooves are formed between outer shroud, inner ring and newel, are water jacket and inside groove.Secondary skeleton is located in water jacket, primary side
Skeleton is located in inside groove.
Present invention additionally comprises the power end filter regulator circuit structure being made up of Zener diode D3 and electric capacity C4；The pair
Side rectification circuit also includes the π type filter circuit constructions being made up of inductance L1, electric capacity C1 and electric capacity C3.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Belong to those skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in, all should
It is included within the scope of the present invention.
Claims (5)
1. the driver for isolating based on impulse generator, for the power switch pipe in driving switch power-supply system, including primary side
Circuit and secondary side rectification circuit, the primary circuit include PWM controller, the N type switch tube Q1 controlled by PWM controller, change
The primary side winding and electric capacity of depressor, the secondary side rectification circuit include the vice-side winding and diode D2 of transformer, the transformation
The Same Name of Ends of the vice-side winding of device draws the first output end as driver for isolating through diode D2, is used for and power switch pipe
Grid connection；The second output end as driver for isolating is drawn at the different name end of the vice-side winding of the transformer, for
The source electrode connection of power switch pipe, it is characterised in that：
Magnetic core, secondary skeleton, vice-side winding, secondary pin, primary side skeleton, primary side winding, primary side on the transformer, transformer
Magnetic core under pin and transformer；
The primary side winding is two lines with around corresponding to main road respectively and from road；
The vice-side winding is two lines with around corresponding to main road respectively and from road；
The primary side pin is at least three, and one is main road and is shared from road that another two is main road and used respectively from road, altogether
Primary side pin is used to detect potential point；
Main road and coiling from road and the connected mode of pin are opposite, make the two electric current around to opposite；
The driver for isolating, in the exciting circuit and degausser of the primary side winding of transformer, electric capacity only operates in degaussing
In circuit, it is not involved in excitatory；
The secondary side rectification circuit also includes the π type filter circuit constructions being made up of inductance L1, electric capacity C1 and electric capacity C3.
2. the driver for isolating according to claim 1 based on impulse generator, it is characterised in that：The primary circuit,
Also include resistance R3 and diode D1, wherein, the Same Name of Ends of transformer draws the input as driver for isolating, for electricity
Potential source is connected；The different name end of transformer is grounded by N type switch tube Q1；One end of electric capacity and the Same Name of Ends of transformer are connected, electricity
The other end of appearance and the negative electrode of diode are connected, and the anode of diode and the different name end of transformer are connected；Resistor coupled in parallel is in electric capacity
Two ends；Wherein,
The exciting circuit of the primary side winding of transformer, is only made up of N type switch tube Q1 conduction path and primary side winding；
The degausser of the primary side winding of transformer, when N type switch tube Q1 is turned off, by electric capacity, resistance, diode and primary side around
Group is constituted.
3. the driver for isolating according to claim 1 based on impulse generator, it is characterised in that：The primary circuit,
Also include resistance R3 and diode D1, wherein, the Same Name of Ends of transformer draws the input as driver for isolating, for electricity
Potential source is connected；The different name end of transformer is grounded by N type switch tube Q1；The anode of diode and the different name end of transformer are connected,
The negative electrode of diode and one end of electric capacity are connected, the other end ground connection of electric capacity；Resistor coupled in parallel is at the two ends of electric capacity；Wherein,
The exciting circuit of the primary side winding of transformer, is only made up of N type switch tube Q1 conduction path and primary side winding；
The degausser of the primary side winding of transformer, when N type switch tube Q1 is turned off, by primary side winding and diode, electric capacity, electricity
Resistance is constituted.
4. the driver for isolating according to any one of claim 1 to 3 based on impulse generator, it is characterised in that：Institute
Secondary side rectification circuit is stated, in addition to accelerates breaking circuit, the acceleration breaking circuit is by resistance R5, resistance R6, resistance R7, p-type
Switching tube Q2 is constituted, wherein, resistance R5 one end is connected to diode D2 anode, and the resistance R5 other end is connected to p-type and opened
Close pipe Q2 grids；Resistance R6 one end is connected to diode D2 negative electrode, and the other end is connected to p-type switching tube Q2 source electrodes, resistance
R7 one end connection p-type switching tube Q2 drain electrodes, the other end is connected to transformer T1 vice-side winding Ns1 different names end.
5. the driver for isolating according to claim 1 based on impulse generator, it is characterised in that：The PWM controller
Model RT9214, it also receives control signal, and PWRGD signal end of the control signal on computer main board is sent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620962552.5U CN206524755U (en) | 2016-08-28 | 2016-08-28 | Driver for isolating based on impulse generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620962552.5U CN206524755U (en) | 2016-08-28 | 2016-08-28 | Driver for isolating based on impulse generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206524755U true CN206524755U (en) | 2017-09-26 |
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ID=59888135
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620962552.5U Expired - Fee Related CN206524755U (en) | 2016-08-28 | 2016-08-28 | Driver for isolating based on impulse generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109688669A (en) * | 2019-03-11 | 2019-04-26 | 福州大学 | A kind of High Power Factor no electrolytic capacitor LED drive power and its control method |
-
2016
- 2016-08-28 CN CN201620962552.5U patent/CN206524755U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109688669A (en) * | 2019-03-11 | 2019-04-26 | 福州大学 | A kind of High Power Factor no electrolytic capacitor LED drive power and its control method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170926 Termination date: 20200828 |